<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        var cartGoods = [
    {
        goodsname:'小米10',
        price:5000,
        isChecked:true,//代表是否选中了
    },
    {
        goodsname:'苹果10',
        price:3000,
        isChecked:false,//代表是否选中了
    }
]
console.log(cartGoods);
console.log(cartGoods[0]);
console.log(cartGoods[1]);
    if(cartGoods[0].isChecked==true && cartGoods[1].isChecked==true){
        console.log('全选了');    }else{
            console.log('没有全选');
        }

    </script>
</body>
</html>